J&J vaccine may be one dose, but that doesn't mean fewer potential side-effects

“I woke up around midnight just violently shaking like shivering, like I was freezing. My teeth were chattering,” Keats said.

“I started getting really tired," Berkenstock said, "a tired I have never felt before.”

“When I had COVID, I just lost taste and smell and had a runny nose for a couple of days," she said. "This is just full body cramps, aches, sweating, headache, and I just feel very clouded.”

Keats said she also experienced excessive sweating, adding that she felt almost back to normal by the next morning.

“It was basically like having a virus condensed into a six-hour period," she said. "It was really intense for those six hours and then totally fine.”

“Your body is going to hurt because it’s fighting for you," Swiner said. "It’s actually a good thing. It’s showing that your immune system is strong in recognizing something bad and it’s building up antibodies. So, the next time – if and when you are exposed – it’ll fight it before you're affected.”

She recommended planning ahead and perhaps taking a day off of work after getting vaccinated or get vaccinated on a Friday to be able to rest throughout the weekend. She also said acetaminophen should help most people through any short-term symptoms.

“I don’t think the symptoms are paralyzing me, and there’s a big benefit to getting the shot," Berkenstock said.

“The next morning, I was fine, and now I feel like life can start to get back to normal in the near future if everyone goes through this,” Keats said.